| Date | November 2021 | Marks available | 1 | Reference code | 21N.1.HL:.tz0.4 |
| Level | Higher Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Question number | 4 | Adapted from | N/A |
Question
Under normal conditions, what is the percentage saturation of hemoglobin in red blood cells as they leave the lungs?
A. 68.5 %
B. 78.5 %
C. 88.5 %
D. 98.5 %
Markscheme
D
Examiners report
A good solid question which discriminated well.
